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Acids and Bases

Lab experiment titrating hydrochloric and acetic acids with NaOH

I would like to see the details of the calculations. For my lab experiment I have the following data: Titration 1: 25.00mL of unknown concentration HCl 2 drops of phenolpthalein to show end-point 1.0M NaOH What is the molarity of the HCl? What is the Ka of the HCl? What is the equivalence point? What is the half-equival

Titration Calculations

Note: You may assume that the densities of all solutions are 1.00 g/mL unless stated otherwise 1. A 10.00-mL sample of a solution containing the weak acid, formic acid, was placed in a 25-mL volumetric flask and diluted to the mark with water. A 10.00-mL sample of the diluted formic acid solution was then titrated with 0.13

Using Titration Techniques

1. If a strong acid and weak acid have the same concentration of acid, explain why they will have a different pH. 2. Explain why it is important to prime the pipette. 3. When using the titration technique explain why the beakers that contain the acid solutions must be dry before the acid is added, but the volumetric flask

Solubility Characteristics of Carboxylic Acids

1) If you took a pea-sized amount of salicylic acid and added 2 mL of demineralized water, what would the solubility of salicylic acid in the water be? 2) If you then added 5 drops of 6 M NaOH to the mixture, what would the solubility of salicylic acid in a base be? 3) I know the result of this is sodium salicylate, whi

Weak Base Reaction Calculations

Can someone please walk me through how to do the following problem: If a solution is made by mixing 20.0 ml 0.4 M NaCH3COO with 30 ml 0.4 M CH3COOH, calculate the pH. For acetic acid, ka = 1.76 x 10^-5.

Acid dissociation reaction.

Can someone please walk me through how to do the following problem? Thank you! Consider the following equation at equilibrium. CH3COOH <---> CH3COO- (aq) + H+ (aq) If NaCH3COO is added to the solution, indicate if the following quantities will increase, decrease, or stay the same -- and explain why for each. [H+] [O

Calculating Ka for Formic Acid

Can someone please walk me through how to do the following problem? Thank you! For a 0.13 M solution of formic acid, HCOOH, the pH = 2.40. Calculate Ka for formic acid. HCOOH <---> HCOO- (aq) + H+ (aq)

PH, Ka

Can someone please walk me through how to do the following problem? Thank you! A typical aspirin tablet contains 324 mg of aspirin (C9O4H8), a monoprotic acid with Ka=2.8 x 10^-4. A monoprotic acid donates a single proton. If you dissolve two aspirin tablets in a 300 ml glass of water, what is the pH of the solution?

Mol/Mol Calculation: Detailed Solution

How many milliliters of 3.00 M hydrochloric acid would be needed to react completely with a milk of magnesia tablet that contains 310 mg of Mg(OH)2? The neutralization reaction produces magnesium chloride, MgCl2, and water.

Tryptophan and Stereoisomerism

Several years ago people who were taking supplements of tryptophan (an essential amino acid that we must take in our food for normal growth and maintenance of a healthy body; without it we could not live) started becoming very ill. Some individuals suggested that tryptophan was what was causing the disease. For most amino acid

Problem Set - Help setting up

1 How many grams of oxygen are required to fill a 4.5 x 103 liter hyperbaric chamber at a pressure of 225 cm Hg and 62 F? If the same quantity of oxygen, was pumped back into a gas cylinder at a pressure of 200 atm and at 75&#61616; F, what would the volume be? 2 Any number of green plants can photosynthesize glucose (C6H12O

Salt solution: acidic or basic?

Predict whether aqueous solutions of each of the following salts are acidic, neutral, or basic. Sodium hydrogen carbonate In class we just learned to look on the table and see if one was a weak acid or strong base, then decide what the solution would be. However, I can't find some of them on the table so then I believe

Design experiment to reduce Fe3+ to Fe2+

I just need some help to get started on designing an experiment for a quantitative colorimetric iron assay. We're allowed to use the following items: deionized water 0.02 M feCl3 1,10-phenanthroline ferrozine filter paper test tubes and test tube racks volumetric flasks HCl NaOH digested soil samples undigested s

Titration Conduction

A titration was conducted to determine the percent of acetic acid within vinegar. The reaction of this titration is HC(2)H(3)O(2) --->NaC(2)H(3)O(2) +H(2)O (water) Given Concentration of NaOH 0.2959 M. Final Buret Reading:26.72 mL Initial buret reading :0.02 mL Volume of NaOH added: 2

Baking soda + 7Up

What gas is producedd when you add baking soda to soft drinks like: 7Up, Sprite, Orange, Dr. Pepper and Coke? Why does Dr. Pepper produce the most gas? Why does 7Up produce the least gas?

Multiple Choice questions on solubility

1. What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? (Ksp PbCl2 = 1.6 x 10-5) a. 7.1 x 10-4 b. 1.1 x 10-4 c. 2.0 x 10-3 d. 1.8 x 10-4 e. 1.6 x 10-5 2. In which aqueous system is PbI2 least soluble? a. H2


1. Given the following table of Ksp values, determine which compound listed has the smallest solubility. compound Ksp CdCO3 5.2 x 10-12 Cd(OH)2 2.5 x 10-14 AgI 8.3 x 10-17

Lab experiment - six prepared solutions

1) This is the scenario: there are six prepared solutions, but the labels are not on the bottles. What are the the solutions in the bottle. The six possible solutions are silver nitrate, barium chloride, copper (II) nitrate, copper(II) sulfate, sodium carbonate, and hydrochloric acid. The results were found by mixing the each so

Molarity, Mole, Dilution

See the attached file. 1. A sample of concetrated nitric acid has density of 1.41g/ml and contains 70% HNO3, by mass. a. What mass of HNO3 is present per litre of solution?(in g/l) b. What is the molarity of the solution? 2. Calculate each of the following quantities. a. molarity of a solution prepared by diluting 3

Salt formation from neutralization of reaction.

What is the name of the salt formed by the complete neutralization of sulfuric acid with lithium hydroxide? Choices: 1. hydrogen sulfite 2. lithium sulfate 3. lithium hydride 4. lithium sulfide

Acidity and Basicity of Boric Acid

Boric acid, H3BO3, is found in some laundry detergents, antimicrobials, and pesticides. With a Ka = 5.8 x 10^-10 it is a weak acid that behaves as a monoprotic acid. Assume you titrate 20.0 mL of 0.11 M boric acid with 0.100 M NaOH. (Show work) 1. Write the equation: 2. What is the pH of the solution before titration begin

Solutions to General Chemistry Questions

Which ion(s) is/are spectator ions in the formation of a precipitate of AgBr via combining aqueous solutions of CoBr2 and AgNO3? a. Co2+ and Ag+ b. Co2+ and NO3- c. NO3- and Br- d. NO3- e. Br- Which of the following is an exchange reaction? a. 2SO(g) + O2(g) ---> 2SO2(g) b. CaCO3(s) ---> CaO(s) + CO2(g) c. F

Calculate the pH

Calculate the pH upon diluting 2ml of 2 N HCL to a final volume of 100 ml? Calcuate the pH upon addition of 0.0075 mole of solid NaOH to 100 ml of a 0.1 M solution of acetic acid (pKa=4.7)? If equal molar amounts of Na2HPO4 and NaJpo4 are mixed in water, calcuate the resulting pH. The pKas of phosphoric acid are 2.1, 7.2,

pH of a Mixed Buffer Solution

A buffer solution is made of 0.100 M HOCl and 0.250 M NaOCl. What is the pH of the resulting solution when a 15.0-mL portion of 0.200 M HCl is added to 100.0 mL of the buffer?

Balancing Equations with Calcium Phosphate and Water

Please can you help me, I need to find balanced chemical equations for: a) The reaction of calcium phosphide and water to produce phosphine and calcium hydroxide; b) The oxide formed when phosphorus burns in air, dissolves in water to give a solution of phosphoric acid (H3PO4).